Oil indicator and pump primer



LLL-39,6%

Jun@ 19,1923.

G. F. MADDEN OIL INDICATOR AND PUMP PRIMER Filed Nov. 30

/l VEN TOH Geo/ye /r/Wadan WITNESSES 14 TOR/VEYS Sill Patented dune l, i923.

GEORGE FREDERICK MAlDDEN, `I ROOSEVELT, UT

OIL INDICATOR AND PUMP PRIMER.

- Application tied November 30, 1921. ASerial No. 519,022.

To all 'whom t may concern.'

Be it hiown that l, Geenen F. nun, a citizen of the United States, and a resident of Roosevelt, in the county of Duchesne and State of Utah, have invented a new and improved Oil Indicator .and Pump Primer, of which the following is a description.

My invention is intended more particularly for embodiment in oil indicator reservoirs employed on automobiles andv auto trucks in connection with the oil pump.

. rlhe general object ot the invention is to provide an indicator reservoir so formed and connected up with the pump that oil will be received in the reservoir from the pump and oil from the reservoir may be returned directly to the pump when required, for priming the latter. A further object is to provide a priming reservoir assemblage constituting an indicating means and permitting oil to exude from a plunger included in the assembla e.

Reference 1s to be had to the accompanying drawings forming a part of this specification, it being understood that the drawings are merely illustrative of one example of the invention.

Figure 1 is a vertical longitudinal section of an oil indicator and primer embodying my invention adjusted for escape of oil through the plunger and showing a pump connection;

Figure 2 is a longitudinal vertical section of said reservoir and primer but with the cap of the plunger in place.

lin carrying out my invention inthe form shown, a reservoir is provided having a nipple 11 or the like, adapted for connecdit tion with an oil pump A, as by a pipe shown connected with the pump adjacent the air chamber a. The nipple 11 is suitably secured to the body of the reservoir 10, as by a threaded dange 13.

lt is to be understood that the pipe lB is so connected with the pump A and relatively to the pump discharge and discharge valve as to permit a return of the duid from the reservoir 10 to the pump for priming.

The reservoir in practice is disposed liori zontally and it has suitably means for mounting it in position on the automobile, as for example, on a dashboard, a portion of which is conventionally indicated as at A'. ln practice, in the preferred form ot the invention, the rear head 14C of the reservoir 10 extends beyond the reservoir in the form of an integral ange 16,v secured by screws 17 or the like to the dashboard, said 'rear head being shown as formed with a boss 15.

A plun er 18 of any approved detail form is adapte to operate in the reservoir 10, the illustrated plunger assemblage includin a cup leather 19. rllhe plunger 18 is provided with a tubular stem 20 extending rearwardly therefrom through the boss and 'provided with a threaded cap 21 forming an operating head which is removable to constitute the stem an indicating means to determine whether oil is being pumped.

A gasket 22 is provided on the stein 20 at the back of the plunger 18 to prevent oil from escaping rearwardly along the plunger, it being understood that the plunger does not tit Huid-tight in the boss 15 in order that no vacuum may be produced behind the plunger as it is moved forwardly or compressed air accumulate when the plunger is moved rearwardly.

With the described arrangement, the reservoir will be filled from the pump, and this will move the plungerto the rear end ,of the reservoir and with the stem projecting a substantial distance in the rear of the reservoir. When it is'desred to prime the pump, the stem may be forced inwardly to cause the plun er 18 to move forwardly in the reservoir, t ereby expelling oil from the nipple 11 and directing the oil to the pump.

It the pump is working properly and a supply of oil is being maintained in the reservoir (10), the oil upon the removal of the ca 21 will be forced through the tubular stem 20), and a sample of oil can be readily obtained. The fact that the stem 20 will be fully extended will be proof that `the pump is working.

ll would state kin. conclusion that while the illustrated example constitutes a practical embodiment of my invention, Il do not limit myself strictly to the exact details herein illustrated, since,vmanifestly, the same can be considerably varied without departure from the spirit of the invention as defined in the appended claims.

Having thus described my invention, l claim:

1. A primer for pumps of the class described, including an indicator reservoir adapted to be connected with a pump to receive oil therefrom, and a plunger in said reservoir optionally movable to returnl oil` nect with the pump to be filled by the operation of the pump, a plunger in said reservoir optionally movable to force out the contents of the reservoir for priming the pump, and means to permit escape of oil rearwardly from in front of the plunger for indicating the pumping of oil to the reservoir.

4. An indicator and primer for pumps, comprising a reservoir havin means to conneet with a pump to be ille by the operation of the pump, a plunger in said reservoir optionally movable to force outA the contents of the reservoir for priming the pump, and a. tubular stem on said plunger and having optionally controllable means to permit/the oil to exude therefrom.

5. An indicator and primer for pumps, comprising a reservoir having means to connect with a pump to be filled by the opera-4 tion of the pump, a plunger in said reservoir optionally movable to force out the contents ofthe reservoir for priming the pum a tubular stem on said plunger exten ing through the back of the reservoir, and a re -movable cap on the outer end of said stem.

GEORGE FREDERICK MAD-DEN. 

